Single spindle chucking machine



April 15, 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE Filed Sept. e, 1946 18 Sheets-Sheet 1 I X 'iMi BY fiaqk ATTORNEY April 15,1952 A. E. DRIISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE Filed Sept. 6, 1946 18 Sheets-Sheet 2 INVENTOR.

ATTORNEY AP-Yfl 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE Filed Sept. 6, 1946 18 Sheets-Sheet 3 April 5, 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDIJE CHUCKING MACHINE Filed Sept. 6, 1946 18 Sheets-Sheet 4 ATTORNEY April 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE caucxme MACHINE Filed Sept. 6, 1946 18 Sheets-Sheet 5 liga- INIEN'I'OR.

ATTOR NEY p 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE Filed Sept. 6, 1946 18 Sheets-$heet 6 BY i A ORNE) April 15, 1952 Q A. E. DRISSNER SINGLE SPINDLE CHUCKING MACHINE Filed Sept. 6, 1946 l8 Sheets-Sheet 7 Ill 1 ATTORNEY April 15, 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE Filed Sept. 6, 1946 v 18 Sheets-Sheet a INVEN'I OK. 13.171 65511131- 11 TTORNE Y April 15, 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE l8 Sheets-Sheet 9 Filed Sept. 6, 1946 ATTORNEY April 1952 A. E. DRISSNER SINGLE SPINDLE CHUCKING MACHINE 1s Sheets- Sheet 10 Filed Sept. 6, 1946 :Ilii r L 6 ATTORNEY A ril 15, 1952 Filed Sept. 6, 1946 A. E. DRISSNER SINGLE SPINDLE CHUCKING MACHINE 18 Sheets-Sheet ll April 15, 1952 A. E. DRISSNER 2,593,277

7 SINGLE SPINDLE CHUCKING MACHINE Filed Sept. e, 1946 18 Sheets-Sheet 12 Minn ' RNEY A ril 15, 1952 A. E. DRISSNER 2,593,277

I SINGLE SPINDLE CHUCKING MACHINE Filed Sept. a, 1946 1a Sheets-SheetlS JTTORNEY April 15, 1952 A. E. DRISSNER SINGLE SPINDLE CHUCkING MACHINE 18 Sheets-Sheet 14 Filed Sept. 6, 1946 lNl EN'l'OR.

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Filed Sept. 6, 1946 18 Sheets-Sheet l5 Ap 1952 A. E. DRISSNER 2,593,277

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April 15, 1952 A. E. DRISSNER 2,593,277

SINGLE SPINDLE CHUCKING MACHINE Filed Sept. 6, 1946 18 Sheets-Sheet 18 INVENTOR.

ATTORNEY Patented Apr. 15, 1952 SINGLE SPINDLE CHUCKING MACHINE Alfred E. Drissner, Cleveland, Ohio, assignor to The National Acme Company, Cleveland, Ohio, a corporation of Ohio Application September 6, 1946, Serial No. 695,171

6 Claims.

This invention relates to metal working machines, an object of the invention being to provide a unique metal working machine having a rotary spindle provided with work holding means such'as a chuck or adaptor and a combination of tool slides such as cross slides located in front of and adjacent to the work holding means and all controlled by means located at the same end and adjacent to the work holding means whereby the operator may stand in front of the machine close to the work with such controlling means within easy reach from the same position so that the use of a tool carrier or turret as heretofore for carrying end working tools spaced endwise from the work holding means is entirely done away with.

The invention further has to do with metal working machines such as chucking machines and particularly with that type known as single spindle chucking machines, an object of the invention being to provide a compact, sturdy and powerful machine requiring less floor space than those heretofore manufactured and so constructed and controlled that higher production and greater accuracy are obtained.

A further object of the invention is the provision of such a machine in which the various mechanisms are easily accessible and all controlled from the front of the machine whereby the operator can stand in front of the machine close to the chuck and its work with all controlling means within reach from the same position.

In the drawings accompanying and forming a part of this specification- Fig. 1 is a front View of the machine with the guard in position.

Fig. 2 is a view of the right hand side of the machine showing the combined forming and turning slide.

Fig. 3 is a front view of the machine with the guard removed to afford easy accessibility to both front slides and illustrating the three-jaw chuck in position.

Fig. 4 is a view showing the left hand side of the machine and the left hand forming slide used for facing, forming, etc.

Fig. 5 is a rear view of the machine illustrating the main motor at the top for driving the spindle and slow feed mechanism with the usual starting box.

Fig. 5A is an enlarged view illustrating certain of the mechanisms shown in Fig. 5 and its associated parts.

Fig. 6 is a close-up view of the right hand forming slide with a cross slide mounted on top thereof for end working tools such as boring and turning or form turning.

Fig. 7 is an enlarged side view of the feed clutch control levers.

Fig. 8 is a front view of these levers together with the starting lever and. the push buttons therebelow.

Fig. 9 is a sectional view taken on line 9-9 of Figure 3 and showing the spindle assembly including the .driving gears and clutch.

Fig. 10 is a sectional view taken on line lO-lll of Figure 3 and showing the change gear mechanism between the main driving motor and the main spindle assembly.

Fig. 11 is a sectional plan view taken on line llll of Figure 16 and showing the feed control mechanism for the tool slides with the parts arranged in one plane to better illustrate their cooperation.

Fig. 12 is a detail view taken on line l2-l2 of Figure 11 and showing the brake and drum of the brake mechanism for preventing the worm shaft from overrunning during high and low feed operations.

Fig. 13 is a cross sectional view taken on line 3-43 of Figure 2 and showing the driving mechanism for the tool slides which are operated by suitable cam drums.

Fig. 14 is a side View of the air mechanism for the spindle clutch.

Fig. 14A is a section on the line I4A-I4A of Fig. 14.

Fig. 15 is a sectional view taken on of Fig. 14.

Fig. 16 is a view taken on line [6-46 of Figure 3 and showing the left hand tool slide and the end of the cross shaft mechanism with the cover removed from the casing.

Fig. 17 is a vertical section taken on line l'l-I'l of Figure 19 and showing the reversing mechanism.

Fig. 18 is a transverse section as on the line iii-l8 of Fig. 17.

Fig. 19 is a sectional view taken on line l9--l9 of Figure 5 and showing a drum shaft assembly.

Fig. 20 is a sectional view taken on line 20-40 of Figure 5 and showing the operating mechanism for the dove-tailed slide.

Fig. 21 is a right hand end View of Fig. 20.

Fig. 22 is a detail view of the dove-tailed slide. and

Fig. 23 is an enlarged fragmentary view taken on line 23-43 of Figure 2 and showing the high and low speed control mechanism.

line ls-#15 Similar reference characters indicate corresponding parts in the several views.

In this improved machine, the usual end working tool carrier or turret slide is entirely done away with, thus enabling the operator to stand in front of the chuck, and in place thereof the machine simply has a plurality of cross slides so that, viewing the machine in Fig. 1 or 3, the operator may stand close to the front of the machine and close to the left hand forming slide used for forming, chamfering and facing and also close to the right hand slide which has a double movement and used for turning, boring, form boring or form turning, taper turning or any shape of boring or turning desired, so that forgings or castings can be turned with one cut to the desired size and length. For example, a bearing ring such as is shown in the drawings can be faced, outer and inner radius, the hole bored either straight or tapered, completing the first operation and then by holding the ring on the inside on a second machine, the opposite end and outside diameter can be completed.

'H'eretofore, various types of single spindle chucking machines have been manufactured but each one had to be operated from the side of the machine because the forming and turning was done with a main tool slide attached at the end of the head stock. This not only required considerable floor space but was very inconvenient for the operator to load the work and control and adjust the tools on the rear side as he had to reach over the machine and the work to adjust the tools.

The present improved machine eliminates this difficulty since the base of the machine is practically square and the chucking and tool control plus the mechanical control of the machine are all operated from the front of the machine where the operator is close to the work, the distance from the guard to the chuck-being only about eighteen inches. It is also otherwise very convenient because when the machine stops withthe 'tool slide in the return position, the work spindle stops automatically and the operator can load the piece by opening and closing the chuck by means of the foot pedal illustrated in Fig. '1 and when the piece is chucked he merely pulls the lever on the upper right hand side, thus starting the machine cycle automatically. Furthermore, While the machine is short and narrow, it has a very powerful spindle and spindle drive which,on the size of machine illustrated, can take up to 25 H. P. motors which is ample for any depth of out or forming within the capacity of the machine with modern cutting tools.

Fig. l, as 'before stated, illustrates a'front view of the machine while Fig. 2 illustrates the right hand side of the machine with its combined forming and turning slide. Fig. 3 illustrates the front of the machine with the guard removed -so that easy accessibility to both front slides and the three-jaw "chuck is afforded. This view 7 also shows'the pushibuttons for starting and stopping the machine and the jogging switch on the right hand side of the push buttons, which jogging switch either jogs the machine or runs it continuously.

Directly above the .push buttons are two levers having ball handles or knobs, the one marked F operating a feeding clutch for the high and low speed feed mechanism and the other, marked "8" starts the machine or rotates or stops the chuck spindle when desired.

Right in back of these two front levers is another lever B which is used when setting up the machine when the piece of work is to be turned part way or the tools returned quickly to their original position.

On pushing this lever R backward, it returns the tool slide immediately so that the operator can measure the piece, adjust his tools or replace a tool and then, by pulling the lever S, start the workcycle again.

This reverse lever saves considerable time for the operator for the reason that, on all previous machines known to the applicant, the machine had to be cranked backward. Thus, it follows that when machines of this improved type are operated close together, one operator can take care of more than one machine since it is easily accessible with the operating means located in front.

This Fig. 3 also illustrates the chuck holding a bearing ring with the tools and tool slides in their returned position to permit the bearing ring .to be easily removed after the completion of the operation thereon.

In :front of the chuck is located a pipe with a funnel nozzle to spread the cooling compound over the work to 0001 both the tools and the Work. The now of this cooling liquid is stopped automatically when the tool slide returns and only floods the work when the tools are engaged thereon. The stopping of this cooling oil is controlled by a small valve which is mounted between the pipe couplings and controlled by the forming slide.

By reason of the improved construction of this short machine permitting the operator to stand immediately in front of the machine, he is close to the work, tools, adjustments, hand operating levers, etc., everything being within his reach so that he will not have to move around the machine to operate :any of the control levers or for setting up the machine and he can chuck and unchuck a piece of work which, in this improved machine, may be up to 12", the presentcapacity of the machine although larger machines of the same type may be provided. He can hold the 'work with both hands and use the foot pedal to open and close the chuck. To prevent accidents, the machine is provided with safeties so that the operator can use both hands to start themachine and, if desired, the foot pedal can be operated only when all the tool slides are in returned position when the power for the foot pedal through a switch is completely disengaged from the air operating cylinder during the work cycle. Provision has also been made so that when the air pressure is below a certain point, the electrical driving means is automatically stopped. The air pressure control valve is also arranged with a pressure gauge to control the pressure of the chuck during the work, the result being that the machine is small, powerful and sturdy with all of the controls and the work accessible to the operator standing in front of the machine. Thus, the machine meets present modern manufacturing problems to make full use of combined tipped 

